Fire-alarm.



No.. 798,197. PATENTED AUG. 29, 1905. H. A. MARSHMAN. FIRE ALARM.

APPLIOATION IILED APR. 22. 1905.

UNITED STATES PATEN T UFFICE.

HENRY A. MARSHMAN, OF ALBANI, N EI/V YORK.

FIRE-ALARM.

T0 ali ww1n iv may concern- Be it known that I, HENRY A. MARSHMAN, a citizen of the United States of America, end a residcnt of the city and county 0f Albany, State of New York, have invented certain new and useful Improvements in Fire-Alarrns, of which the following is a specification.

My invention relates t0 fire-alarm devices; end che object of my invention is to provide un automatic fire-alarm Which Will be set in operation when the temperature of the apartrnent in which it is placed reaches a certain degree and when in operation Will sound the alarm, indicating the location of the fire, together with such elements and combinauions as are hereinafter more particularly set forth and clairned. I attain this object by means of the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a front clevation with parts broken away of che controlling device. Fig. 2 is a side elevation with parts broken awa.y 01" the dcvce for signaling and recording the location of the fire. Fig. 3 is a front elevation of Fig. 2.

Sirnlar characters refer to similar parts throughout the severa] views.

For the purpose of controlling a fire-alarnn apparatus I place a cylinder A, Fig. 1, which has at one end B a restrcted opening C. Within che cylinder I place fine sand D, and to prevent the sand frorn escaping through the opening C when the cylinder is in position I arrange a spring-strip E, secured at one end e in such a manncr thai: when t is against the resiliency of said spring brought in engagement with che Iatch G it Will close the opening C in the end of the cylinder. F01 this purpose I preferably arrange a valve-seat, conssting of an enlarged projecting portion H, on the spring-strip E, which WII cngage said openng C, although I do not limit rnyself to this manner of closng the opening:

The latch G is preferably constructed of a material which has a IOW meIting-point, and when the end of the latch G melts ofi the spring-strip E Will spring away, uncovering the openingC and allowing the contents of che cylinder the sand D-to escape.

Within the cylinder I pla Ce a plunger J, carrying a rod K, upon which is arranged a series of serrations L, adapted to engage the contact-finger M when the plunger descends through the cylinder On che end of the plunger I place in washer (Z to prevent the sand frorn Working up. 'Ihe rod K s also Specification of Letters Patent.

Applcation fi1ed April 22, 1905.

Patented. Aug. 29, 1905. Se1ILINO.Z5G,S5S.

provided with a series of projecting contactpoints N O P, each series separated from the others and each series containing one or more contact-ponts, which points \VI1 engage thc contact-finger M alternatcly as the plungerJ moves down through the cylinder. I also arrange a contacbfinger M engaging With the rod K at all times, thc contact-finger M being connccted With the electric wire m/,Which leads to the source of electric supply m (See Fig. 2.) The contact-finger M is connected With the wire m, which in turn is connected with the magneu 5, Fig. 2.

Vithin operative distance of the magnct 5 I place thc armature 6, preferably hingcd ho a plate 7 at 8 and carrying a hznnnner 9, adapted to strke n bell 10 when the maguet is charged. On the armature 6 I arrangc a punch or marker 11, Which may register with an opening 12 in che plate 7. I also preferably arrange a hook 13 on the rod 14, which carries the hammer 9. Engaging With the hook 18 is one end of the trigger 15, Which is pivobed at 16 and engages a hook 17, attached to the feed-roller 18. IVhen the mugnet is charged and the armature 6 is brought incontact therewth, th'e hammer 9 Will strike thc bell 10 and the punch 11 Will enter the openng 12 in the plate 7, at the sune time the trigger 15 Will becorne dsengaged from the hook 17, releusng the fecd-roller 18. The hook 13, drawing 01'1e end 01' the trigger toward the bell, releases the other end and pulls it away from the hook 17.

I rnount a wheel 19, which carries a roll of narrow paper 20, usually termed tape, above the armature 6. The paper is hrough; downward between the armature end che plute 7 and enguges the feed-rollers 18 and 21, passing between them and by them caused ho un- 1011 from the wheel 19. As thus arranged when the punch 11 is in operation it will penetrate the paper lying hetween il; and the plate 7. F01 the purpose of cuusing the paper to leave the punch when the punch is withdrawn I place the wres or rods W W on the platc 7 over the paper end adjacent to the opening 12.

F or the purpose 01 causing the feed-rollers 18 and 21t0 revolvc I place a geur-wheel 22, carrying a spring 23, which wheel 22 is wound against the tehsion of the spring 23, and the spring sccured at 24 to the frame or WLII 01' the huilding, and which wheel also has a dog 25 and ratchet 26. Meshing with the gear on the whcel 22 s a gear 27 on the IIO feed-roller 21. The tendency 0' tbe gearwheel 22 is to revolve and in its revolution to set in motion feecbroller 21. '1he friction 01' the 'eed-roller 18 when it is beld by tbebook 17 from revolving upon feed-roller 21 Will, however, keep tbe rollers i'r0m operating until the roller 18 is released. \Vhen tbe trigger 15 has been trpped, releasing tbe hook 17, tbe feed-rollers 18 and 21 Will revolve, causing the paper 20 to unroll from the wheel 19.

The operation of my invention is as follows: VVhen tbe temperature 0f tbe room in wbicb the cylnder A is plaeed is sufficently high t0 melt the catch G, tbe strip E Wll spring away from tbe openng 0 and the sand D Will begin te escape, wbch Will allow the plunger J t0 'a1l and bring tbe serratons L, which are preferably elose together, to engage the contact-finger M, and tbrougb tbe wire m Will cause the magnet 5 to be charged, and tberefore the bell to be rung, making a streke for each serration on tbe rod. \Vble the series L on the rod are rnaking contact one after tbe other With the finger M a series 0'f quckly-repeated strokes Will be made on tbe bell. Vhen the seres N on the rod engage tbe finger M, the contact-points being slightly 'artber apart tbe signals on tbe bel] Will be more pronouneed and may be counted. There would tben be four strokes. At tbe same time on the paper tape 20 tbere would be formed four holes. Vhen the rod descends until tbe series 0 engage tbe finger M, there Will be two strokes sounded on tbe bell and two punetu1*es in tbe paper, and when the series P reacbes the finger 1\1 there Will tben be sonnded three strokes, and three punctures Will be made in tbe tape. The alarm would then show No. 493, the first strokes on the bell while tbe series L were being recorded being simply te cali attention to the further ringing of the bell, whcb W0uld record the numbers.

Of eourse I do not limit myself to the ar' rangement of the contact-ponts on the rod or the number of strokes to be made on tbe bel] 01' the order in wbieh they are to be made and recorded. It is also apparent that I may do away With tbe tape or paper and depend entirely upon the bell for gvng the alarm. Tbe paper, bowever, s very convenient,especally in a large bulding in wbich there are many of tbe operating-eylinders A to be placed eaeh in a different room or 10- eality, since the paper may be consulted :for the purpose of determinng at once in xvhat place the fire is burning even if the observer did not i'ollow througb bis count 0f tbe strokes on the bell.

VVhat I cla1n as my inVention, and desire to secure by Letters Patent, s--

1. In a fire-alarm apparatus; a eylinder adapted t0 bold sand; a plunger; means Within the cylinder for supporting tbe plunger a rod carrying said plunger; a series of contactponts on sad rod'; a means for conveying a eurrent ot' electricity to said rod; a means f01 causng said eontact-points te engage an electric conductor during; tbe movement of said plunger; with a means f0r opening said cylinder, all-owng its contents to eseape when the temperature in the room exceeds a certan predetermined degree, substantially as described.

2. A cylinder containing an openng at one end; a covering for said opening; a means f01 holding said cover in position; a means for releasing said eover when the temperature 01 tbe room in which'it s placed reacbes a certain predetermined degree; a plunger in said eylnder carrying a rod; means within tbe cylinder for supporting tbe plunger a series of contact-points on said r0d; means f0r conveying electricty to said rod; a contact-finger arranged 130 engage said eontact-points respectively on said rod, as the rod enters tbe cylinder; a bell; a magnet; an armature carrying a hammer; a wire connecting said magnet with tbe said contact-fingef, adapted to engage said contacw points on the rod all substantally as described.

8. A eylinder; an automatic temperaturecontrolled means 'or opening said cylinder, allowng tbe contents to escape by gravity; a plunger earryng an electrieally-connected red; means wtl1n tbe cylinder f0r supporting tbe plunger; a contact-finger; means on said rod for engaging eontact-b'nger at eertain predetermined intervalsduring tbe mevement of sad rod; a magnet eleetrically eonnected to said contacbfinger and said rod; an armature controlled by said magnet; a barnmer eonnected to said armature; a bell adapted to be operated upon by said hamrner, substantally as described.

1. A cylinder; an automatic temperaturecontrolled means for opening said cylinder, allowng tbe contents to eseape by gravity; a plunger earrying an electrically-connected rod; means withn tbe eylnder for supporting tbe plunger; a contact-finger; means on said rod f0r engaging contact-finger at certain predetermned intervals during tbe movement 0f said rod; a magnet electrically conneeted to said contackfinger and said rod; an armature controlled by said magnet; a bammer connected to said armature; a bell adapted to be operated upon by said hammer, a paper; means tor 'eeding the sarne; a punch earried by said armature and adapted to engage said paper when tbe armature is attracted by Said magnet, substantially as deseribed.

5. A eylinder; an automatic temperaturecontrolled means for opening said eylinder, allowing the contents t0 escape by gravity; a plunger carryng an electrically-connected rod; means wtbin tbe cylinder 'f0r supportng tbe plunger; a eontact-finger; means on said rod i"or engaging contact-finger at certain ISO predetermmed intervals during the movement of said rod; a magnet electrically connected to said contact-finger and said rod; an armature controlled by said magnet; a hammer connected no said armature; abell adapted to be operated upon by said hammer, a wheel carrying a roll 0f paper; feed-rollers engaging, said paper; a gear-wheel engaging one of said feed-rollers; a spring adapted to impartmoton to said gear-wheel; a device for holding said feed-rollers a,qainst the tendency of the said gear-wheel 130 revolve; a means f01' liberating said feed-rollers when the magnet s charged; a meansfor marking said paper cm responding to each stxoke of the hammer on the bell.

6. A cylinder; an automatic temperaturecontrolled means f01 opening said cylnder, allowing contents t0 escape by gravity; a plunger carrying an electrically-connected rod; means within the cylinder f01 supporting said feed-rollers; EL means for holding said feed-rollers stationary; a means for liberatng said feed-rollers when the magnet is charged; a means for markngsaid paper correspndng to each sbroke of the hamrner on the bell.

Signed ai: Albany, New York, this 17 th day Of April, 1905.

HENRY A. MARSHMAN. WVitnesses:

FREDERICK W. CAMERON, LOTTIE PRIOR. 

